Field Note Book Crocker Land Expedition 1913-1915 No. 53 Seismograph, 1916-1917
Page 15
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Transcription
Clock - cont. fr. p. 7. 11.XI - 7:24:36 Clock slow 8 min 24 sec (= 504 sec.) of chronometer a loss of 102 seconds in 7 days - an average of 14½ sec per day. Shortened pendulum two turns Started clock again, at 7:34:20 it was 9 min 40 sec (=580 sec.) slow - wound clock. 13.XI - Moon Clock slow 8min 3.5 sec. Apparent gain 6½ in 2 days. 14.XI 9:45am - Slow 8 min 5 sec gain of 30 sec. Lengthened 1 turn Started clock 9 min 28 sec slow. 15.XI 10:15 a. Slow 9:17 sec. gain 11 sec 16.XI 10:10 a Slow 9:06 sec. gain 11 sec. (Temp last night outside - 11°) Clock hangs against dining room partition - no fire after ca 7p. Cool after midnight) 17.XI 10:15a Slow 8 min 54sec. gain 12 s. Lengthened pendulum ½ turn Started clock 10 min 32 sec slow Wound 18.XI - 10 a.m. Clock 10 min 48 sec slow of watch. Watch 16 sec fast of chronom. ∴ clock 10 min 32 sec slow of chromom - 2 + no change from yesterday.